Bhadra Dhaval, Shah Nimisha C, Kishan Karkala Venkappa, Dedania Meetkumar S
Department of Conservative Dentistry and Endodontics, K. M. Shah Dental College, Sumandeep Vidyapeeth, Vadodara, Gujarat, India.
J Conserv Dent. 2019 Jan-Feb;22(1):87-91. doi: 10.4103/JCD.JCD_181_18.
Comparative evaluation of commonly consumed catechu and catechu with lime on surface roughness and color stability of the conventional nano-hybrid composite.
A total of 50 uniform cylindrical disks of 10-mm diameter and 2-mm thickness prepared from the nano-hybrid composite were used in the study. Each sample was randomly divided into three subgroups of 20 samples each in two experimental groups (catechu, catechu, and lime) and 10 samples in the control group (artificial saliva). The samples were immersed in each agent for 15 days. Surface roughness and color changes measurements were noted at the baseline and 15 day by two-dimensional profilometer and spectrophotometer, respectively.
It was found that nano-hybrid composite resin showed more surface roughness and color change when immersed in catechu and catechu with lime as compared to the control group. Intergroup comparison showed statistical significant increase in surface roughness and color change in the catechu group followed by the catechu with the lime group and artificial saliva.
Within the limits of the present study, it can be concluded that all experimental specimens showed discoloration. At the end of 15 day, among the groups, catechu showed more surface roughness and color change followed by the catechu and lime and the control group.
比较常用儿茶和加石灰儿茶对传统纳米复合树脂表面粗糙度和颜色稳定性的影响。
本研究使用了由纳米复合树脂制备的50个直径10毫米、厚度2毫米的均匀圆柱形盘。每个样本随机分为两个实验组(儿茶组、加石灰儿茶组)各20个样本和一个对照组(人工唾液组)10个样本。样本在每种试剂中浸泡15天。分别在基线和第15天用二维轮廓仪和分光光度计记录表面粗糙度和颜色变化测量值。
发现纳米复合树脂在浸泡于儿茶和加石灰儿茶中时,与对照组相比表现出更多的表面粗糙度和颜色变化。组间比较显示,儿茶组的表面粗糙度和颜色变化有统计学显著增加,其次是加石灰儿茶组和人工唾液组。
在本研究范围内,可以得出结论,所有实验样本均出现变色。在第15天结束时,各组中,儿茶组表现出更多的表面粗糙度和颜色变化,其次是加石灰儿茶组和对照组。